Dimension Accuracy and Surface Integrity of Creep Feed Ground Titanium Alloy with Monolayer Brazed CBN Shaped Wheels

作者：Yang Changyong; Xu Jiuhua^*; Ding Wenfeng; Chen Zhenzhen; Fu Yucan

来源：Chinese Journal of Aeronautics, 2010, 23(5): 585-590.

DOI：10.1016/S1000-9361(09)60258-2

• creep feed
• dimension accuracy
• surface integrity
• monolayer brazed CBN grinding wheel
• titanium alloys

Titanium alloy tenon is creep feed ground with monolayer brazed cubic boron nitride (CBN) shaped wheels The dimension accuracy of the tenon is assessed and the results indicate that it completely meets the requirement of blade tenon of aero-engine Residual stresses, surface roughness, microstructure and microhardness are measured on ground surfaces of the specimen, which are all compared with that ground with vitrified CBN wheels Under all the circumstances, compressive residual stress is ob tamed and the depth of the machining affected zone is found to be less than 40 mu m No phase transformation is observed at depths of up to 100 mu m below the surface, though plastic deformation is visible in the process of grain refinement The residual stress and microhardness of specimens ground with brazed CBN wheels are observed to be lower than those ground with vitrified ones The arithmetic mean roughness (R(a)) values obtained are all below 0 8 mu m

• 出版日期2010-10
• 单位南京航空航天大学